Multiple thermochemical cutting attachment



April 13,1948. NUBBY 2,439,629

MULTIPLE THERMOCHEMICAL CUTTING ATTACHMENT Filed March 20, 194*? 2 ShetsSheet 1 Fig I.

Inventor Sfewarf N. Libby s. N. LIBYBY April 13, 1948.

MULTIPLE THERMOCHEMICAL CUTTING ATTACHMENT 2 Sheets-Sheet 2 Filed March20, 1947 Inventor Sfewarf .N. Libby Patented Apr. 13, 1948 ENT OFFICE.

MULTIPLE THERMOCHEMICAL CUTTING ATTACHMENT Stewart N. Libby, Chicago,Ill. Application March 20, 1947, Serial No. 736,014

. 1 Claim. 248*214) This invention refers generally to thermochemicalcuttingapparatus, and more particularly to means for 'mountingaplurality of torches on the torch bar cfithermochemical cuttingapparatus, and includes means whereby a selected number of similarlongitudinally aligned extension members are separably secured togetherand secured to the, specially designed bracket on the torch bar, thetorches being adjustably mounted in clamps provided on the ends ofspacer members securable on said extension members.

A primary object of this invention is to enable the operator of athermochemical cutting apparatus to. handle large. sections of work andto make several cuts simultaneously, thus increasing the capacity andversatilityof the apparatus.

Another object of this invention is to provide torch holding means whichmay be extended indefinitely by adding a greater number of sections,hereinafter referred to as extensionmembers, the capacity of the machinebeing limited only by the number of extension members and torchesavailable.

Still another object of this invention is to provide for adjustabilityof the torches in a plurality of planes and angular disposition to thework.

Still another object of this invention is to provide an attachment whichmay be used with several types of thermochemical cutting apparatus.

And a last object to be specifically mentioned is to provide a device ofthis character which is relatively inexpensive and practicable tomanufacture, extremely simple and convenient to install, adjust and use,and which will give generally efiicient and durable service.

With these objects definitely in view, this invention resides in certainnovel features of construction, combination and arrangement of parts andportions as will be described in detail hereinafter and particularly setforth in the appended claim, reference being had to the accompanyingdrawings which form a material part of this application, and in which:

Figure 1 is a top plan view of this invention operatively applied to anadjustable torch bar mechanism;

Figure 2 is a vertical sectional view of the bracket, extension members,secured to a torch bar, the figure being designed to illustrate theconstruction of the bracket and the means used to separably securesections of the extension member to said bracket and to each other;

Figure 3 is a perspective view of the bracket I0 is represented in thedrawings 2 and a portion of one of the sections of said extensionmember;

Figure 4 is a vertical longitudinal sectionview taken through one of thespacer membersvvhich are secured at one end to the said? extensionmember and are adapted with a sliding bearing and a pinion for theadjustable mounting. thereon of torches having a vertically disposedrack, one of said torches being indicated in the figure in dash lines;and a Figure 51s a. cross-sectional View of a. portion of the clamp,taken on the line-5.5" in Figure'fi.

Similar characters of reference designate similar or identical, partsand. portions throughout the specification and throughout the severalviews of the drawings.

Referring now to the drawings in detail, it will be noted that theenvironment wherewith this invention is to be used includesa torch barI, extensibly mounted by means of tog link members l2 and I4 and. across link member I 6, to a portion of the frame ill of a thermocuttingand welding machine. The torch bar as comprised of a tube which issquare in cross-section, as best illustrated in Figure 2, and ofconsiderable length. This torch bar provides support for the subjectmatter of this invention, the V-shaped bracket 20 having lip flanges 22adapted to fit over diagonally disposed corners The bracket is providedwith a pair of reinforcing ribs 24 disposed centrally and exteriorlythereof, and a boss 26 which is drilled and tapped to receive ascrew-threaded thumb screw 28. The inside surface of the bracket 20 isundercut, as at 30, so that the bracket contacts. the square sectionedtorch bar I 0 at the corners only. A block 32, having one face notchedto correspond with the shape of a corner portion of the torch bar I0 isprovided with an elongated slot 34, which slot is disposed transverselyof the block and of a size to loosely receive the retaining pin 36inserted through this slot and terminally secured to the boss 28. Thisconstruction allows the bracket 20 to be longitudinally shifted alongthe square sectioned torch bar It! and the clamping of the bracketthereto at any desired position.

The laterally extending member, generally indicated by the numeral 38,is comprised of a plurality of similar tubular members 49, each of whichis closed at the ends 42 and 44 thereof, the end 42 being provided witha screw-threaded stud 46 which is integrally secured thereto, and theend 44 being centrally drilled and tap ed to .re

of this bar.

ceive a similar screw-threaded stud, whereby a plurality of thesesections 40 may be separably connected to constitute the extensionmember 38, it being understood that the bracket 20 is drilled andtapped, as at 48, to receive one of these threaded studs 46. It ispreferred that the bracket 20 be provided with a boss 50, aligned withone of the ribs 24, to provide a proper seating member for the ,end ofthe innermost section 40 of the extension member.

Right-angularly disposed members, hereinafter referred to as spacermembers 52, are provided with spring clamp ends 54 and fastening bolts56, thereby adapting the spacer members 52 for adjustable clampingthereof to the extending member 38, that is, to any one of the sections40. The other end of each of the spacer members 52 is provided with aslide bearing fill which has a lateral- 1y extending attachment member62 rigidly secured to the spacer member 52.

Each of the slide bearings 60 has a cylindrical bore portion adapted toreceive a torch 64 of con ventional design. On the outer side of each ofthe slide bearings 65 there is provided a transversely disposed bearing66, in which is mounted the shaft portion of a thumb screw 58, anintermediate portion of said shaft being provided with a pinion 10,adapted to coact with the rack 12, normally provided on the body portionof torches of the type which will be used with this invention.

The operation of this invention will be clearly understood from theforegoing description of the V mechanical details thereof, taken inconnection with the above recitation of the objects sought to beachieved by this invention, but, in recapitulation, it may be expedientto note that, although the angular disposition of the extending member38 is not alterable, this member may be shifted longitudinally of thetorch rod Ill, and the spacer members 52 may be shifted rotationally onthe 4 sections 40. Further adJustability of the device is 4 attained byadjustment of the torches 64 vertically in the slide bearing 60. It willtherefore be seen that a plurality of torches may be convenientlymounted on this device and that the above objects have all been amplyattained.

Though there has been shown a particular embodiment of this invention,this application is not limited to this particular embodiment, but it isdesired to include in the scope of this invention the construction,combination and arrangement of parts and portions substantially as setforth in the appended claim.

What is claimed as new and desired to be seecured by Letters Patent is:

Means for mounting a plurality of torches on the torch bar ofthermochemical cutting apparatus comprising a bracket longitudinallyadjustably mounted on said bar, a plurality of similar longitudinallyaligned sections separably secured together and secured to said bracket,clamps longitudinally adjustably mounted onsaid members and havingadjustable attachment means for torches, said bracket including a blockconfigured to fit a portion of said torch 'bar andslidably mountedWithin a recess insaid bracket, a-pin inserted through a slot in saidblock and secured to said bracket, and a thumb screw threadedly mountedin said bracket and operatively contacting said block.

STEWART N. LIBBY.

REFERENCES CITED The following references are of record in the file ofthis patent:

. UNITED STATES PATENTS j

